Duplicating machine



Jan, 18, 1927. 1,615,084

I H. A. IRWIN DUPLICATING MACHINE I Filed Nov. 12 I 1925 3 Sheets-Sheet 1 mvsnoa JEMROLDAJQWIN Q M AITORNEYS.

Jan. 18, 1927.

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DUPLICATING MACHINE Filed Nov. 12 v 1925 s Sheets-Sheet 2' INVENTOR fiqzeoLoA zzwrn WITNESSES I A'VITORNEYS Jan. 18,1927.

H. A. IRWIN DUPLICATING MACHINE Filed Nov. 12

. 1925 3 Sheets-Sheet 3 M fi l N INVENTOR fiflflLDAhz kw ATTORNEYS WlTN ESSES M Patented Jan. 18 1927'.

UNITED STATES HAROLD A. IRWIN, OI BROOKLYN, YQRK.

DUPLICATING MACHINE.

Application filed November This invention relates to a duplicating machine and has as the primary object to provide an improved duplicating machine which will facilitate a speedier production of copies with greater ease and cleanliness of operation.

Another object of the invention is to provide an improved duplicating machine with means for instantly adjusting the printing position to any desired margin on the paper (top, bottom, right or left).

A further object of this invention is to provide a more effective and simplified means of attaching the stencil to the printing rocking member.

Another object of the invention is to provide a duplicating machine wherein a rockable member is provided for forming a printing operation upon each rocking movement, the same being associated with means for maintaining the locking structure in alignment.

A still further object of the invention is to provide an improved duplicating machine wherein a printing rocking element is pro vided and actuated by a vertically extending handle which will cause any pressure thereon to increase the rocking action rather than a heavier print, rendering the production of copies uniform.

Another object of the invention is to provide a du licating machine in which the arts may e nested in a container when not in use and the container used when in use as means for assembling and disassembling the printing element of the device.

In the accompanying drawings Figure 1 is a pers ective view of a duplicating machine emhodying the invention, the same being shown folded and ready for shipment or storage.

Figure 2 is a perspective view similar to Figure 1 but showing the cover removed.

Figure 3 is a. view of a cover similar to that shown in Figure 2 but with the rocker cover removed disclosing the perforated rocker plate.

Figure 4 is a view of the complete rocker and its base as the same appears when in use.

Figure 5 is a sectional view through Figure 6 on line 55.

Figure 6 is a longitudinal sectional view through Figure 4 on line 66, the rocker being in its central position.

Figure 7 is a fragmentary top plan view 12, 1925. Serial No. 68,670.

of part of the impression table shown in Figure 6 with the paper stop and graduations associated therewith.

Figure 8 is an enlarged detail fragmentary perspective view of one end of a paper stop embodying certain features of the invention.

Figure 9 is a sectional view through Figure 6' on line 9-9.

Figure 10 is an enlarged fragmentary sectional view through Figure 4: on line 10-10.

Figure 11 is an enlarged perspective view showing one corner of the rocker illustrated in Figure 6 and illustrating how the pad and stencil are held in place.

Referring to the accompanying drawings by numerals, 1 indicates an impression table and 2 a rocker which includes a handle 3 having a grip 4. Handle 3 is provided with a split bar, which may be jolned or made solid, so that when the thumb screw 15 is actuated, a spring tension is obtained which will cause the members to spring outward clearing the pin 16. Associated with the impression table 1 and rocker 2 is a cover 5 formed with means for receiving and holding the rocker as well as the impression table when not in use. Thecover is made to extend an appreciable distance past the outer wall of the channel to facilitate the positioning of the cover plate. The handle also serves to rest the rocker on end in easellike fashion while operating, as when replenishing the exhausted supply of pa er 57 or when attaching the stencil, etc. 'Fhe cover 5 is provided with a number of stops 6 which may be secured to the cover in any desired manner and act to support the cover on the table 1. If desired, the stops may be eliminated and the supporting members 4:9 used as supports for the cover 5. Also con nected interiorly of the cover 5 are rocker holding brackets 7, each bracket being formed with a notch :8 for receiving one end of the rest rod 9. Spring holdingmembers 10 are arranged in the cover 5 near the op posite end to bracket 7, said spring holding members being adapted to receive the ends of the position rod 11, which rod is snapped into a position between the springs when'the parts are in the position shown in Figures 2 and 3.

hen it is desired to apply ink to the rocker late 1-2, the parts are arranged as shown n the upper part of Figure'2 and the bar 13 grasped, after which it is pulled until the same is disengaged from the remaining part of the rocker 2 whereupon the remaining part will appear as shown in Figure 3 and ink may be readily applied in the usual manner, as for instance, by a brush. When it is desired to remove the rocker plate 12 and associated parts from the position shown in Figure 3, the end of the rocker at rod 11 may be grasped and given a sudden pull which will cause the same to snap past the upper part of the springs 10 and then by a short movement to the left, the rest rod 9 may be disengaged from the bracket 7. However, before this is done, the cover plate 14: is replaced so that when'the parts are removed the entire rocker 2 will be disengaged from the cover .5 so that it may be caused to function as shown in Figure 4. lVhen the parts are to be assembled and positioned in the cover as shown in Figure 1, handle 3 is moved to the position shown in Figure 2 but when the device is in use, the thumb screw 15 is actuated until the parts are loose so that the handle may be swung to a position at right angles to bar 13 and then the screw is tightened to hold the handle in this right angle position.

As indicated in Figures 5 and 6, a pin 16 is carried by the bar 13 and, therefore, the respective parts of the handle 3 must be loosened sufficiently to be moved away from this pin before the handle can be folded or unfolded. The notch 16 permits the handle 3 to be secured to the bar 13 by the thumb screw 15 without interference of the pin 16, when folded as in Figure 2. As more particularly indicated in Figure 6, the rocker 2 is provided with a stencil 17, an ink pad 18, a perforated rocker plate 12, a cover plate 14, bar 13, handle 3 and certain other detail parts hereinafter fully described. At one end the rocker plate 12 is bent at right angles to the main body of the plate for forming a right angle section 19 which .merges into a looped portion 20 and the looped portion 20 in turn merges into a hook 21over which the bent over or hook section 22 of the end member 23 of the stencil 17 is fitted. The edge of the hook 21 is straight and also the edge of hook member 22 is straight so that when these parts are interlocked as shown in Figure 6 and then the stencil fitted tightly over the pad 18, said stencil will be held correctly and be properly aligned with the other parts of the rocker so as to function properly with the impression table 1. It will be noted from Figure 6 also that the end of the cover plate 14 is formed with a bent over portion 24- which hooks orfits over the looped portion 20 and acts in the same way as the bent over 'or looped portion 25 at the opposite end of the cover plate whereby the cover plate is held ..correctly in position, said bent ends being somewhat resilient pressing tightly against the loop 20 and the loop 26 respectively. The loop 26 is provided with a number of cut away portions 27 (Figure 3) so as to provide resilient fingers 28 adapted to receive the rod 29 and the looped portion 30 of the end member 31 connected to the stenoil 17. This way of holding this end of the stencil is very desirable as it will take care of any small change in length of the stencil caused by various circumstances, as the ink or quality of paper.

In order to hold the pad 18 in place, the same is provided with loops at each end and in each loop is provided a rod 32. rods project beyond the side edges of the pad and are engaged by cars or catches 33 extending from the angle irons 36 and which readily hold the pad in place while at the same time permitting easy and quick re moval at any time. Rigidly secured to the rocker plate 12 at each side, are channel irons 34: of identical construction. The in ner flange of each of these channel irons is lower than the outer flange and, therefore, provides an inner protecting wall 35 which will not transfer possible ink collections thereon to the cover plate 14 while the chan nel or outer chamber 35 is provided on each side of what may be termed an ink chamber 37. The cover 14 fits snugly against the outer flange of the respective channel irons 34; except at the extreme ends as shown in Figure 6. The walls 35 fall short of each end of the plate 12 and are associated with end members 38 and 39 which act in a capacity similar to walls 35, each end member being provided with a turned over flange 40 whereby a partly enclosed portion or pocket is formed for catching any ink that might flow to the ends of the device during the operation and when rocker 2 is resting on end or in inverted position inside of cover 5. Also, the side walls 35 act to prevent the ink from spreading laterally while at the same time confining the brush to the perforated portions only during the application of the ink. A suitable distance is thus maintained at sides and ends of rocker plate 12 which is kept free from ink. The inner protecting walls 35 and 38 and 39 are not only desirable but necessary for the cleaning operation of the device, as the careless application of ink or its tendency to spread would result in inky deposits upon the exposed surfaces of the rocker 2. The channel around the ink chamber 37 catches and retains any ink that may have escaped from the ink chamber. The rod 11 is arranged between the end member 38 and the turned up end of plate 12, said rod extending loosely through a pipe or sleeve 41 fitting snugly between the outer flanges of the channel irons 34. The pipe or sleeve 41 serves to grip the rod 11 and hold it by means of friction at any desired point to which the rod may be ad- These justed; it also forms an ink tight compartment for the rod. A similar structure is provided with rod 9 at the opposite end of the rocker, namely, a sleeve or pipe 42. These rods are made slightly longer than the rocker is wide and, therefore, the rocker may slide on these rods so as to operate either from the right or left on the side of the im-' pression table 1. In regard to the, rod 9, it will be noted that the ends thereof are knurled so that when they engage the pads 43 and 44, no slipping action will result.

Also, the rod 11 is provided withenlarged ends adapted to strike the respective channel irons 34 and limit the sliding movement of this rod or rather the sliding movement of the rocker on this rod. Enlarged ends 45 are provided ineach of the rods 11, said enlarged ends having inclined portions 46 adapted to engage the sides of the respective positioning springs 47 and thereby cause a proper centering or aligning action of the rocker 2. In this way, each time the rod 11 strikes the springs 47 the parts will be brought back to their correct position but this movement may be very small and not noticeable by the eye or hand but causes a continued proper registration of the stencil with the paper on the table 1. The position rod with its co-acting parts also facilitates the initial positioning of the rocker 2 on the im ression table 1.

n regard to the impression table 1, it will be noted that the same is formed from flat material, as for instance, metal, and is provided with a plurality of supporting members 49. If desired, bracing members 50 and 51 may be welded or otherwise secured to the under face of the table 1 for maintaining its flat surface. WVelded, riveted or otherwise rigidly secured to the table 1 are comparatively long guides 52 and 513 and also short guides 54 and 55. The provision of long guides 52 and 53 is desirable in that it permits a short piece of paper to be used as well as a long piece. In place of long and short guides 53 andv 55, one solid guide may be substituted to extend along the major part of the impression table. Also, these guides are preferably spaced on the impression table at a greater distance than the width of the paper 57 thereby enabling the operator toshift the printing on the paper to the right hand margin when desired. This is readily accomplished when the paper 57' is changed from its position against the right hand guides to the left hand guides. This shifting of the paper would cause the rocker 2 to print beyond the right hand margin of the paper and it would only be necessary to slide the rocker over to the left to the desired margin. When it is desired to shift the printing to the left hand margin, it is I only necessary to slide the rocker on the position rod to the left when the paper is situated at the right hand paper guides. With the aid of the double set of guides, the paper may be placed at either set and the rocker operated by the right or left hand as preferred. For the purpose of changing the position of printing at the top or bottom of the paper 57, a movable impression pad or platen 56 is preferably loosely positioned between the lateral guides, and on the pad or platen is: arranged the paper 57 which is held in correct position by the guides 53 and 55 and the clamping end 58 of the stop- 59, which stop is preferably formed from a piece of resilient metal which will cause it to follow the diminishing thickness of paper downward, and is adjustably held in place by a suitable clamping screw extending through the slot 61. By reason of this slot, stop 59 may be adjusted longitudinally for the purpose of raising or lowering the impression pad or platen 56 and paper 57 on the impression table I, thus raisin-g or lowering the printing on the paper.

' Figure 7 shows end 58 of stop 59 extending through the slot 62 formed in the impression table and secured in its normal position with a distance at either end for longitudinal adjustment. The graduation-s at the side of the slot assist in the adjustment of the stop; No. 1 (Figure 7) indicating the normal adjustment when printing on thirteen inch paper or less and No. 2 (Figure 7) indicat ing the normal adjustment for fourteen inch paper; The impression pad or platen 56 is not essential but preferable as it not only acts as a carrier for the paper but also insures a flatter and softer printing surface. The device is operated without its use when printing on extra long paper such as fourteen inch paper. The guides 52, 53, 54and may be made adj ustablc. Preferably, the edges of the clamping end 58 are curevd so that the sheets of paper 57 may be readily removed without danger of tearing. The springs 47 are provided with curved portions 63 for receiving the enlarged ends of rod 11 while the cam portion- 46 of the ends 45 engages the edges of the springs for causing a desired centering action. The curved portion 48 of the springs 47 is made lower than the free end to facilitate the positioning of the rocker on the springs. The pads 43 and 44 at the opposite ends of the table 1 are fitted into suitable cups 43 and 44, said cups being of metal preferably and secured in place by welding, riveting or other suitable means.

From Figures 2 and 6 it will be noted that a depressionv 64 is provided in the end of table 1 so as to insure the rod 11 resting on the springs 47 and to allow an unobstructed movement. of the rocker. It will be noted that the ends 45 are of such diameter that they will always hold the rocker 2' elevated above the table 1 at least to the extent of the thickness of the pad 56, though ordinarily, the springs 47 will perform this function and thereby cause the end of the rocker to properly engage the end of the paper. If this structure was not irovided, the rocker would engage the stock of paper 57 with a bumping action and push it forward,

In operation, after the parts have been properly positioned as shown in Figure 4 and it is desired to make several copies from a stencil, the handle 3 is moved to the right as shown in Figure i until the rod 9 engages the pads 43 and 44:. The movement is continued until the bar 13 is almost vertical. As soon as the parts reach the position just described, the operator grasps the upper sheet of paper 57 and removes the same. As soon as this has been done, the rocker 2 is rocked back to the position a little further than that shown in Figure l or until the stencil is out of engagement with the paper whereupon a second sheet is removed. The rocker is then moved back until rod 9 engages the pads 4-3 and as. This back and forth movement is continued and upon each movement a sheet is printed and removed. It will be noted that when the printing operation starts the rocker does not require repositioning as the operation is automatic and there is no positioning of the paper but merely a removal of the paper after each printing operation. Ordinarily, the grip t is grasped by one hand and the rocker 2 is rocked back and forth while the other hand of the operator removes the sheets of paper 5! as the rocker pauses at each end of the impression table 1. The use of the pans 43 and 44 is very desirable as the rod 9 engages the same at a different place each time. As the pile of paper 57 decreases, the rod 9 strikes the pads nearer and nearer one end and each time they strike the springs 47, a proper re-aligning is provided which is, of course, very small. If springs similar to the springs 47 were provided instead of the pads 48 and 4A, the action would not be as accurate by reason of the different distance the rocker would have to travel upon. different thicknesses of paper What I claim is:

1. A duplicating machine, comprising an impression table, a printing rocker operable on said table, a rod extending from opposite sides of said rocker at one end thereof, and a pair of springs having arcshaped portions for receiving said rod and automatically starting the rocker in register.

2. A duplicating machine, comprising an impression table, a printing rocker operably mounted on said table adapted to be rocked thereon for producing an impression on each rocking movement, and a folding handle foractuating said rocker, said handle extending in a direction normal to the center of the rocker and projecting an appreciable distance away from a chord drawn from one end of the rocker to the other so that power applied to the outer end thereof will produce a rocking action.

8. A duplicating machine, comprising an impression table adapted to receive a supply of paper, a rocker mounted on said table and positioned to cause an impression on said paper as it rocks from one end of the table to the other, said rocker producing an impression upon both the forward and back rocking motions, and a foldable hand actuated member connected with said rocker for actuating the same.

4. In a duplicating machine, an impression table, comprising a body formed with a Hat surface, a plurality of paper guides mounted on said body, means for clamping paper 011 said body between said guides, a pair of pads at one end of said body, and a pair of positioning springs at the opposite end.

5. In a duplicating machine, an impression table and a printing rocker co-acting therewith, said table being adapted to receive a supply of paper, and a plurality of positioning springs mounted on the table near one end co-acting with the rocker for directing the position of the rocker upon each back and forth movement thereof.

6. In a duplicating machine, an impression table, comprising a flat body, a plurality of spaced paper guides arranged on the body, a pair of rest pads mounted on said body at one end, and a pair of positioning springs mounted on said body at the opposite end.

7. In a duplicating machine, an impression table, comprising a fiat body formed with a slot near one end, said body being adapted to receive paper, a stop formed with means extending through said slot and overlapping said paper for clamping the paper on said body, said stop being formed with a slot, and a clamping screw extending through said slot for clamping the stop in different positions.

8. In a. duplicating machine, a cover and a plurality of holding devices arranged in the cover on a rocker, one set of holding devices. being formed as apertured brackets and the other as pairs of co-acting catch springs, said holding devices being adapted to receive and hold the rocker in said cover.

9. In a duplicating machine, a rocker comprising an arc-shaped perforated plate formed with loops at each end, a pad mounted on said plate, a stencil mounted on said pad, independent means co-acting with the stencil and pad for holding the same in position, a cover for said plate formed with looped ends fitting over the looped ends of the plate, all of said looped ends being somewhat resilient whereby the cover is held removably in place by the resilient action of the co-acting parts, a brace bar extending across the cover and forming in effect a chord, and a foldable actuating handle extending from the center of said bar substantially at right angles thereto.

10. I11 a duplicating machine, a rocker, said rocker including a perforated rocker plate having looped ends, a cover for said plate formed with looped ends overlapping the looped: ends of the. rocker, all of said looped ends being resilient whereby the cover is held in place by the resilient action of the parts, and a foldableactuating handle connected with said cover, said handle extending in a direction normal to the center of said cover.

11. In a duplicating machine, a rocker, said rocker including a perforated rocker plate formed arc-shaped, a channel iron connected to the interior of said rocker plate near each end, an end plate connected to said rocker plate near each end, said end plates engaging the inner flange of said channel irons whereby there is provided a space entirely around the rocker plate for preventing undue spreading of ink therefrom, and means including a handle connected with said rocker plate for causing the same to function properly when in operation.

12. In a duplicating machine, a rocker, said rocker including an arc-shaped perforated rocker plate formed at one end with a hook portion having a straight edge and at the opposite end with resilient fingers, a pad mounted on said rocker plate, arstencil mounted on top of said pad formed with end members, one of said end members being bent over for forming a hook, said hook fitting into the hook structure of said rocker plate and by reason of the straight edge thereof said stencil is properly positioned on said pad and a rod associated with the opposite end of said stencil for forcing part of said opposite end beneath said fingers whereby the same is resiliently held in place and the stencil is properly held in functioning position, and manually actuated means connected with said rocker plate for causing the rocker to function when in operation.

18. In a duplicating machine, an impression table adapted to receive paper, a rocker co-acting with said table, a stencil mounted on said rocker, said stencil being formed with flexible holding members at each end and means co-acting with said holding members and the rocker for removably securing the stencil on the rocker, said means including a hook-shaped member on the rocker co-acting with one of the holding members which interlocks therewith, a plurality of resilient members at the opposite end of the rocker, and a rod positioned to hold the folding portion of the other of said members in said resilient members.

14. In a duplicating machine, an impression table, a rocker co-acting with said table, a plurality of positioning springs for said rocker, and a rod extending through one end of said rocker positioned to engage said positioning springs when the rocker has been moved to one extreme position, said rocker being slidingly mounted on said rod whereby it may be caused to be adjusted laterally to canse'the rocker to print centrally on either side or in intermediate position in respect to the impression table.

15. In a duplicating machine, a rocker formed with a perforated arc-shaped rocking plate, a pad, means for securing said pad to said plate, a stencil mounted on top of said pad, means for removably securing said stencil in place, a bar extending sub stantially from one end of the other of the rocker plate at the back thereof, and a handle secured to the center of said rod extending substantially normal to the rod, said handle extending beyond the conlines of said rocking plate.

HAROLD A. IRWIN. 

